testunitの驚き

ruby

以下のコードを実行するとおもしろいことになる



require 'test/unit'



class TestHashConst < Test::Unit::TestCase
  def setup

  end

  def teardown

  end

end
結果


$ ruby -I ../src testx.rb

Loaded suite testx

Started

F

Finished in 0.03 seconds.
  1) Failure:

default_test(TestHashConst)

    [/usr/lib/ruby/1.8/test/unit/assertions.rb:32:in `assert_block'

     /usr/lib/ruby/1.8/test/unit/assertions.rb:30:in `_wrap_assertion'

     /usr/lib/ruby/1.8/test/unit/assertions.rb:34:in `assert_block'

     /usr/lib/ruby/1.8/test/unit/assertions.rb:227:in `flunk'

     /usr/lib/ruby/1.8/test/unit/testcase.rb:99:in `default_test'

     /usr/lib/ruby/1.8/test/unit/testcase.rb:70:in `__send__'

     /usr/lib/ruby/1.8/test/unit/testcase.rb:70:in `run'

     /usr/lib/ruby/1.8/test/unit/testsuite.rb:34:in `run'

     /usr/lib/ruby/1.8/test/unit/testsuite.rb:33:in `each'

     /usr/lib/ruby/1.8/test/unit/testsuite.rb:33:in `run'

     /usr/lib/ruby/1.8/test/unit/testsuite.rb:34:in `run'

     /usr/lib/ruby/1.8/test/unit/testsuite.rb:33:in `each'

     /usr/lib/ruby/1.8/test/unit/testsuite.rb:33:in `run'

     /usr/lib/ruby/1.8/test/unit/ui/testrunnermediator.rb:46:in `run_suite'

     /usr/lib/ruby/1.8/test/unit/ui/console/testrunner.rb:72:in `start_mediator'
     /usr/lib/ruby/1.8/test/unit/ui/console/testrunner.rb:46:in `start'

     /usr/lib/ruby/1.8/test/unit/ui/console/testrunner.rb:21:in `run'

     /usr/lib/ruby/1.8/test/unit/autorunner.rb:185:in `run'

     /usr/lib/ruby/1.8/test/unit/autorunner.rb:13:in `run'

     /usr/lib/ruby/1.8/test/unit.rb:275

     /usr/lib/ruby/1.8/test/unit.rb:275]:

No tests were specified.
1 tests, 1 assertions, 1 failures, 0 errors
単に文法チェクをやるつもりで実行してみたらエラーになる．
何が原因だかわからず試行錯誤したところテストメソッドが一つも定義されていない状態で実行するとこうなると判明．
ちょっと焦った．
バグではないんだろうな，たぶん．

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